20002143401 has 4 divisors (see below), whose sum is σ = 20196339072. Its totient is φ = 19807947732.

The previous prime is 20002143389. The next prime is 20002143419. The reversal of 20002143401 is 10434120002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002143401 is a prime.

It is a super-3 number, since 3×20002143401³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20002143401.

It is not an unprimeable number, because it can be changed into a prime (20002143481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97097681 + ... + 97097886.

It is an arithmetic number, because the mean of its divisors is an integer number (5049084768).

Almost surely, 2^20002143401 is an apocalyptic number.

It is an amenable number.

20002143401 is a deficient number, since it is larger than the sum of its proper divisors (194195671).

20002143401 is a wasteful number, since it uses less digits than its factorization.

20002143401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194195670.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20002143401 its reverse (10434120002), we get a palindrome (30436263403).

The spelling of 20002143401 in words is "twenty billion, two million, one hundred forty-three thousand, four hundred one".